Rotary pump or motor



Feb. 20, 1951 F. M. WEYER ROTARY PUMP 0R MOTOR Filed Nov. 22, 1946 I fZZ I 47 2 i N: mi@ .48 .'t/W

IN VEN TOR.

Patented Feb. 20, 1951 f 'Y UNITED STAT 2,542,268 ICE ROTARY BUMP OR MOTOR Ferdinand M. `Weyer, Detroit, Mi'c'h., assigner to Marine Brcducts Company, Detroit, `Mi`ch., a4

corporation of Michigan ApplicationfNovember 22, 1946, Serial No. 711,517

12 Claims. (Cl. 10B- 117) .This invention. relates t fluid pressure machinery and` in particular to, iiuidipressure pumps .cmuncvtorsV One object ofA this invention is to provide a nuidpressure pumpor motor having` a rotor ofv resilient material, a portion of whichnexes as it passes. abutments arranged between the intake and outlet of the .pump casing, thereby providing an effective barrier betweenthe suction and discharge sides of the pump in a simpleV and efficient manner.

Another. object is to provide a huidpressure pump or motor as set forth. in the preceding object wherein the end plates of the. pump casing aref provided with inwardly extending abutments and. the rotor is provided with resilient vanes which engage these abutments and fiex axially toward one another as they pass the abutments.

Another object is to provide a uid pressure pump or motor, as set forth in theV preceding u object,I wherein the peripheral inner wall of the pump casing is substantially cylindrical, and the axis ofthe rotor shaft is substantially concentric therewith. so that the resilient vanes constantly contact this peripheral' inner `wall without the .necessity 'of' radial fiexing or yieldingas the rotor rotates. y

Another' object is to provide a uid. pressure pump or motor, as set Vforth 'in the preceding objects wherein the abutments are formedv on `separate end `plate liners so that the manufac- "ture of the pump is simplified and its cost 'of pro- `ti'ally broken away to disclose itscperipheral construction;

Fi'gure 3 isan irregular generally horizontal sectionthrough the. pump or motor shown in Figures 1 and 2, taken along the partially arcuate line 3 -3 .inl'igure 2;

1 .Figureil isatop planrview oftherotorremoved Yfrom they pump Aor rnotor;`

Figure'y 5 is a. sideelevation of an. abutment :plate removed from the pump or motor; and

.Figure 6 is an edge elevation of. the abutment platel shown .in Figure. 5. Y, 1

' v.lteferring .to the drawings in. detail, lFigure '1 fshows apreferred form of the duid pressure. pump or motor of this invention as consisting of a housing, generally designated i0, supported upon a pedestal H integral therewith -and having a base. portion l2 at the bottom thereof for mounting the .pump upon any suitable support. The housing `l() above the pedestal l! is provided with. a.4 journal portion I3 having a. bearing. bore f4 (Figure 1) therethrough, and also having a threadedhole. I5 leading thereto. Mounted in the. .threaded hole I5 is the tubularshank .I6 of `a lubricator ll.. The lubricator l1 is conventional and may consist of an oil or grease cuplor `a fitting for a conventional pressure lubrication. de-

vice. The right-hand or outer end of the journal portion I3 terminates in an annular recess- I8 threaded as atv I9 to receive an annular plug or gland `2l] adapted to compress an annular pack.- -ngZl in therecess I3.

The housing -Ill at` its-opposite end is enlarged to provide the disc-likeend wall 22 o-f'an approximately cylindrical casing portion 23 having intakev and outletbosses. 25- and 2t respectively with threaded intake: and discharge ports 251 and 26 leading into a cylindrical'rotor chamber 28. The open edge 29 of the casing portion 23 is engaged and closed by an approxz'unatelyv circular end plate 3! bolted or otherwise secured .thereto as at 3|.

Journaled in the bearing bore I4 is :a rotor `shait t2,` the .latten passing through the packing 2l. vand the hole 33 through the center of4 the gland 20. Mounted on the outer endof the shaft 32-isfthefhub 34. of 'a' pulley 35 having a bore 36 for; receiving `the shaft 32 anda set screw 31 threaded through the radial hole'tS therein for securing the pulley 35 to. the` shaft32; The pulley 3.5 isprovidedwith theusual groove 3S for-receiv- "ing a. belt (not shown) by which the device is driven, if used as a` pump, or which transmits power from the shaft 32 in the event that.V the device. is used as a motor..

Theirmer end of. they shaft 32 is splined as at til to. receive the correspondingly Vgroovedhub all of a 4rotor or impeller generally designated 42. Theahub 4l is provided with a` disc-like flange 43 having circumferentially .spaced holes 4'4 therein. The ange 3 serves to receiveV the resilient core 45 of the rotor t2 and is made of elastic deformable material such as rubber or synthetic rubber. The material of the core- 45 extends through the holes yM and locks the core d5 firmly to the hub 4l.

Integral with the core 45 and extending radially outward from the hub 4 lare vanes 46 like- .wise of elastic deformable material such as rubber or-synthetic rubber. The radially-extending odres-4l of the vanes 4.5 are enlarged so as. tobe red-like4 andof i circular cross-section. The. outer or peripheral ends t8 of. the vanes 4.6 snugly en'- gage the innervwall of the cylindrical chamber 2li-,which is co-axial with the shaft 32. The core .fi5- is extend-ed. axially as at 49. at its opposite end to'enc-ircle-,the hub 4l and to cover the latter with a tubular layer of theV elastic deformable material. The periphery of the core [l5 is extended out:- wardlyaround the rim of the flange 43 of the `hub lil to provide. a resilient annular portion 50 interconnecting `the vanes i6 near their outer ends (Figure 2). Thus, the core 45 in, crosssection. is approximately in. the shape of two truncated'triangles extending in opposite directions with' their basesadjacent the hub Att (Figure 1).

Extending axially outward from the chamber 28 in the end wall 22 and end plate 30 are 0ppositely directed sockets 5l and 52 (Figure 1).

Y Mounted within the chamber 28 are disc-like abutment portions 56 and 51 are struck out of' the abutment plates 53 and 54, such as Yby appropriate discs.

' Theabutment plates 53 and Stare secured vwithin the chamber 2G (Figure l) by being provided with axially projecting portions 5S and '59 of tubular rivet-like form integral therewith and seated in the sockets 5l and 52. In this manner, the abutment plates 53 and 54 are held i vsecurely in position and also prevented' from rotating. It will be understood that the abutment portions 56 and 51 may be formed integral with the end wall 22 and end plate 3B respectively, but in actual production it is found more economicall to form them upon the separate abutment plates 53 and 54.

In the operation of the device as a pump, intake and discharge conduits (not shown) are connected to the intake and dischargeV ports 2E and 2l and the pulley 35 is connected to a source of power, such as an engine, by a suitable belt (not shown) A's the shaft 32 is rotated by the pulley 35 in a clockwise direction (Figure 2), iiuid is drawn in through the intake port 21 and expelled 'ports 21 and 26, but also reduces the volume between adjacent vanes 46, expelling the fluid contained between the iiexed vane and the uniiexed vane (Figures 2 and 3), through the discharge port 21.

If the device is used as a motor, pressure fluid is supplied to the chamber 28 through the intake port 21. This pressure fluid acts against the vanes E6, causing rotation of the'rotor 42 and shaft 32, the fluid being discharged through the discharge port 25. As the vanes 46 pass the abutment portions 55 and 51, they are flexed as described above, and a seal is established between the intake and discharge ports 21 and 25. The power thereby imparted to the shaft 32 is transmitted by a belt on the pulley 39 to any suitable source of utilization.

The device is well adapted for use as a pump for handling water, and is especially well suited for s erviceas a bilge pump. Since the vanes '46 are flexed only in an axial direction (speaking with reference to the axis of rotation of said rotor) and retain a constantly straight shape in a radial direction, they have a long life and are dependable in operation. The use of water in connection with a rubber or rubber-like rotor 4 2 provides a lubricating action between the vanes 56 and the metallic parts which they engage, resulting in a reduction of friction and a smooth operation with a minimum of wear. While a pulley has been shown for transmit- 4 Y ting power to or from the shaft 32,'it will be obvious that gearing or other suitable conventional mechanism may be used forV the same purpose.

While I have shown and described my invention in detail, it is to be understood that the Vsame is to be limited only by the appended claims, for many changes may -be made without departing from the spirit and scope of my invention.

What I claim is:

l. A rotary pump or motor comprising a hollow casing having circumferentially-spaced :luid intake and discharge ports therein, and'having a peripheral wall and axially-spaced end walls, a rotor of elastic 'deformable material rotatably mounted in said'casing upon an axis of rotation transverse to said end walls and having radiallyvdisposed resilient varies engaging said walls, and

a'radially-disposed abutment projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said vanes to flex said vanes in a direction approximately parallel to said axis of rotation of said rotor. v

2. A rotary pump or motor comprising a hollow casing having circumferentially-spaced fluid intake and discharge ports therein, and yhaving a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said Walls, and aradially-disposed abutment of approximately sector-shape-projecting axially inwardzfrom one of said end walls between said ports and engageable with the radially-extending edges of said vanes to flex said varies in a direction approximately parallel to said axis of rotationl of said rotor. 7 f

3. A rotary pump or motor comprising a hollow casing having circumferentially-spaced fluid intake and discharge ports therein, and having a peripheral wall and axially-spaced endwalls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging saidwalls, and a radially-disposed abutment projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said vanes to flex said vanes in `a direction approximately parallel to Ysaid axis of rotation of said rotor," said peripheral wall having an internally cylindrical configuration and said rotor lbeing mounted upon an axis of rotation co-incident with the axis of Vsaid peripheral wall.

4. A rotary pump or motor comprising a hollow casing having circumferentially-spaced fluid intake and discharge ports therein, and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said walls, and a radially-disposed abutment of approximately sector-shape projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said vanes to iiex said vanes in a direction approximately parallel to said axis of rotation of said rotor, said peripheral wall having an internally rcylindrical configuration and said rotor .being mounted upon an axis of rotation cio-incident with the axis of said peripheral wall.

5. A rotary pump or motor comprising a hollow casing having circumferentially-spaced fiuid intake and discharge ports therein, and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said walls, and a pair oi 'radially disposed abutments projecting axially inward toward one another from said end walls between said ports and engageable with the opposite radially extending edges of said vanes to ex said opposite radially-extending edges of said vanes toward each other in a direction approximately parallel to said axis of rotation of said rotor.

6. A rotary pump or motor comprising a hollow casing having circumferentially-spaced fluid intake and discharge ports therein, and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing and having radiallydisposed resilient vanes engaging said walls, and a pair of radially disposed abutments of approximately sector-shape projecting axially inward toward one another from said end walls between said ports and engageable with the opposite radially extending edges of said vanes to flex said opposite radially-extending edges of said vanes toward each other in a direction approximately parallel to said axis of rotation of said rotor.

'7. A rotary pump or motor comprising a hollow casing having circumferentially-spaced iiuid intake and discharge ports therein, and having a peripheral wall and axially-spaced end wall-s, a rotor of elastic deformable material rotatably mounted in said casing and having radially-disposed resilient vanes engaging said walls, and a radially-disposed abutment member in said casing having an abutment portion projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said vanes to flex said vanes in a direction approximately parallel to said axis of rotation of said rotor.

8. A rotary pump or motor comprising a hollow casing having circumferentially-spaced iiuid intake and discharge ports therein, and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing and having radially-disposed resilent vanes engaging said walls, and a radially-disposed abutment member in said casing having an abutment portion of approximately sector-shape projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said vanes to flex said vanes in a direction approximately parallel to said axis of rotation of said rotor.

9. A rotary pump or motor comprising a hollow casing having ciroumferentially-spaced uid intake and discharge ports therein and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing and hving radially-disposed resilient vanes engaging said walls, and a radially-disposed abutment member in said casing having an abutment portion projecting axially inward from one of said end walls between said ports and engageable with the radially-extending edges of said varies to flex said vanes in a direction approximately parallel to said axis of rotation of said rotor, said peripheral wall having an internally cylindrical configuration and said rotor being mounted upon an axis of rotation co-incident with the axis of said peripheral wall.

l0. A rotary pump or motor comprising a hollow casing having circumferentially-spaced :fluid intake and discharge ports therein and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said walls, and a pair of radially-disposed abutments projecting axially inward toward one another from said end walls between said ports and engageable with the opposite radially extending edges of said vanes to ilex said opposite radially-extending edges of said vanes toward each other in a direction approximately parallel to said axis of rotation of said rotor, said peripheral wall having an internally cylindrical coniiguration and said rotor being mounted upon an axis of rotation oo-incident with the axis of said peripheral wall.

ll. A rotary pump or motor comprising a hollow casing having oircumferentially-spaced iiuid intake and discharge ports therein and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said walls,` and a pair of spaced abutment members within said casing having radially-disposed abutment portions projecting axially inward toward one another between said ports and engageable with the opposite radially extending edges of said vanes to fiex said opposite radially-extending edges of said vanes toward each other in a direction approximately parallel to said axis of rotation of said rotor.

l2. A rotary or motor, comprising a hollow casing having circumferentially-spaced fluid intake and discharge ports therein and having a peripheral wall and axially-spaced end walls, a rotor of elastic deformable material rotatably mounted in said casing upon an axis of rotation transverse to said end walls and having radiallydisposed resilient vanes engaging said walls, and a pair of spaced abutment members within said casing having radially-disposed abutment portions projeoting axially inward toward one another between said ports and engageable with the opposite radially extending edges of said vanes to flex said opposite radially-extending edges of said vanes toward each other in a direction approximately parallel to said axis of rotation of said rotor, said abutment portions being of approximately sector-shape.

FERDINAND M. WEYER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,052,474 Johnson Aug. 25, 1936 2,189,356 Briggs Feb. 6, 1940 FOREIGN PATENTS Number Country Date 353,370 France June 27, 1905 

